CAD OF MILLIMETER WAVE OSCILLATORS WITH THE FDHB TECHNIQUE

In this paper the modelling, analysis and optimization of millimeter wave oscillatorsare investigated by using the a frequency-domain harmonic balance technique (FDHB), where theexternal-circuit impedances looking outside from the active device are calculated with a combinedtechnique of modes expansion, Galerkin, and collocation methods. The optimization results arein agreement with the experimental ones, which show the reliability of the presented model andoptimization.     

Interface microstructure and reaction in Gr/Al metal matrix composites

The interface structure in Gr/Al composites fabricated with liquid metal infiltration has been studied using transmission electron microscopy (TEM). Morphologies of interfacial reaction product, aluminium carbide Al₄C₃, formed at different manufacturing parameters were compared and, the growth mechanism of the carbide was studied by means of high resolution electron microscopy (HREM). It has been shown that the morphology of the carbide is intimately related to the processing parameters with which the composites were produced. There are two kinds of interfaces between the carbide and the aluminium matrix. They have different growth mechanisms and relative growth rates under different growth driving forces. Several crystal orientation relationships between the carbide and the aluminium matrix have been observed.     

多功能滚齿机的数字控制系统

本文叙述了以ＳＴＤＰＣ／ＸＴ（或ＰＣ／ＡＴ）机为主要核心构成的滚齿机数字控制系统的结构，软件设计和特点，系统采用混合语言编程，极大地提高了软件设计的灵活性与快速性，也分析了ＣＮＣ系统的加工过程，提出了加工中的软件预处理控制方法，并给出了轴伺服控制的并行算法分析与实现。     

GaP：（N）的背景光谱和发光尖峰

获得高分辨ＧａＰ（Ｎ）光致发光光谱，观察到等电子陷陆束缚激子发光中ＬＯ和ｌｏｃ多声子发射，其强度分布答合泊松分布。将声子伴带区分为直接光跃迁和间接光跃迁，并进行了相应讨论，还观察到局域声子效应－－光谱相似定律和相当显著的背景光谱。     

Nd：碲酸盐玻璃的光谱和激光性质

对比了各种激光玻璃的光谱性质，指出碲酸盐玻璃是一咱理想的激光介质，并资产在室温下实现了钛宝石激光器泵浦了Ｎｄ：碲酸盐块体玻璃的激光发射，激光阈值４．２０ｍＪ，斜率效率１４．７％。     

WQ—10型煤气平焰烧嘴的半工业性试验研究

对ＷＱ－１０型煤气平焰烧嘴进行半工业性试验，得到了该烧嘴较长时间运行下的一些性能。结果表明，该烧嘴平火焰稳定，炉顶温度分布均匀，燃烧烟气中ＣＯ、ＮＯ含量达到了ＹＢ／Ｔ０６２－９４标准的要求。     

钒钛磁铁精矿的烧结特性及强化措施

阐述了钒钛磁铁精矿的矿石特点，烧结特性及其与烧结矿质量之间的关系，并提出了强化烧结的措施。     

补充型润滑油添加剂分析

补充型润滑油添加剂对改善和提高油品使用性能具有重要意义，有较大的发展应用潜力。本文对补充型添加剂及有关问题进行了分析和分析，认为补充型添加剂不是万能的，使用时须认真考虑与润滑油的协和性，要加强对它的质量监控。